Football helmet shell



FIG. 1 is a left, top, perspective view of a football helmet shellshowing our design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in the drawings depict portions of the football helmetshell that form no part of the claimed design.

CLAIM The ornamental design for a football helmet shell, as shown anddescribed.